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FUTURE STUDENTS ask.UWindsor SUPPORT UWINDSOR
Faculty of Science

Dr. David Symons

Distinguished University ProfessorPortrait of Dr David Symons Emeritus

School of the Environment
University of Windsor
401 Sunset Avenue
Windsor, Ontario, N9B 3P4, Canada

Rm. 102C Memorial Hall
Phone: +1 (519) 253-3000 ext. 2493
Fax: +1 (519) 973-7081
Email: dsymons@uwindsor.ca

Education

B.Sc.  University of Toronto, Canada  1960
M.Sc.  Harvard University, USA   1961
Ph.D.  University of Toronto, Canada   1965

Awards and Honours

Lifetime Professor Emeritus, University of Windsor  2002
Principal Emeritus, Canterbury College  2003
University Professor, University of Windsor 1998

Principal Research Interests and Projects

Paleomagnetic studies of well-dated rock units to examine the tectonic evolution of the Cordillera, especially in Yukon and northern Ontario.
Paleomagnetic dating of ore deposits that are not amenable to radiometric age dating in order to study their ore genesis. 

a) Paleomagnetic Dating of Ore Deposits

The age of mineralization is the most crucial information needed to understand the genesis of an ore deposit and therefore, how to explore for such a deposit. However, several important types of ore deposits of Pb, Zn, Cu, Ba, Fe, F, etc., are not readily dated by conventional radiometric methods, either because they do not contain the necessary radioactive minerals or because these minerals are too fine-grained to be confidently separated. Paleomagnetic dating methods can often provide the necessary age information for such difficult deposits, providing suitably sensitive laboratory equipment is available. The University of Windsor Paleomagnetic Laboratory was built specifically for ore deposit studies and has been the world leader in this research for the past thirty years. Many examples of such studies can be found in the publications list. Current projects include the F deposits in southern Spain and native copper deposits on the Keweenaw Penisula of northern Michigan.

b) North American Tectonics

The use of paleomagnetic methods to study the tectonic evolution of the Canadian Cordillera and Laurentian Shield remains a major research focus in our laboratory. Recent studies are being done on the Yukon-Tanana terrane in Yukon and the Neoarchean Wabigoon terrane of northwestern Ontario. Recent papers are listed under "Publications".

  • 2G automated vertical-axis cryogenic magnetometer
  • Magnetics Measurement TSD-1 thermal demagnetizer
  • Sapphire Instruments impulse magnetizer
  • Sapphire Instruments AF demagnetizer with DC coil for ARM measurements
  • Sapphire Instruments susceptibility meter
  • Bartington field susceptibility suite and dual-frequency sensor
  • Geometrics cesium gradiometer with DGPS
  • AGICO Kappabridge KLY-3 susceptibility meter with furnace and low temperature attachment
  • Magnetically shielded room
  • Symons, D.T.A., 2019. Introduction for the David W. Strangway Special Issue. Canadian Journal of Earth Sciences 56: vii-viii.
  • Symons, D.T.A, Kawasaki, K., 2019. Jurassic location of the Yukon-Tanana terrane from paleomagnetism of the folded Mississippian Tatlmain batholith and Ragged stock. Geophysical Journal International 219: 1660-1678.
  • Zhao, W., Zhao, X., Xue, C., Symons, D.T.A., Cui, X., Xing, L., 2019. Structural characterization of the Katebasu gold deposit, Xinjiang, China: Tectonic correlation with the amalgamation of the western Tianshan. Ore Geology Reviews 107: 888-902.
  • Symons, D.T.A., Kawasaki, K., 2019. Paleomagnetism of the native copper mineralization, Keweenaw Peninsula, Michigan. Canadian Journal of Earth Sciences 56: 932-947.
  • Dai, J., Xue, C., Chi, G., Ji, H., Zhao, X., Zhao, Y., Li, J., Symons, D.T.A., 2019. Geological, geochronological and geochemical characteristics and genesis of the Arqiale skarn Zn-Pb deposit, Western Tianshan, Northwest China. Ore Geology Reviews 106: 79-96.
  • Gao, R., Xue, C., Zhao, X., Chen, X., Li, Z., Symons, D.T.A., 2019. Source and possible leaching process of ore metals in the Uragen sandstone-hosted Zn-Pb deposit, Xinjiang, China: Constraints from lead isotopes and rare earth elements geochemistry. Ore Geology Reviews 106: 56-78.
  • Symons, D.T.A., Kawasaki, K., Diehl, J.F., 2018. Magnetization age from paleomagnetism of the Copper Harbor red beds, northern Michigan, USA, and its Keweenawan geological consequences. Canadian Journal of Earth Sciences 56: 1-15.
  • Zhao, Y., Xue, C., Symons, D.T.A., Zhao, X., Zhang, G., Yang, Y., Zu, B., 2018. Temporal variations in the mantle source beneath the Eastern Tianshan nickel belt and implications for Ni-Cu mineralization potential. Lithos 314-315: 597-616.
  • Yalikun, Y., Xue, C., Symons, D.T.A., 2018. Paleomagnetic age and tectonic constraints on the genesis of the giant Jinding Zn-Pb deposit, Yunnan, China. Mineralium Deposita 53: 245-259.
  • Yalikun, Y., Xue, C., Dai, Z., Chi, G., Fayek, M., Symons, D., 2018. Microbial structures and possible bacterial sulfide fossils in the giant JinDing Zn-Pb deposit, Yunnan, SW-China: Insights into the genesis of Zn-Pb sulfide mineralization. Ore Geology Reviews 92: 61-72.
  • Zhao, Y., Xue, C., Liu, S., Symons, D.T.A., Zhao, X., Yang, Y., Ke, J., 2017. Copper isotope fractionation during sulfide-magma differentiation in the Tulaergen magmatic Ni-Cu deposit, NW China. Lithos 286-287: 206-215.
  • Symons, D.T.A., Kawasaki, K., McCausland, P.J.A., Hart, C.J.R., 2017. Palaeopole for the 69 Ma Prospector Mountain stock: a critique of the Carmacks/"Baja BC" transport estimate for Yukon, Canada. Geophysical Journal International 208: 349-367.
  • Symons, D.T.A., Kawasaki, K., Tornos, F., Velasco, F., Rosales, I., 2017. Temporal constraints on genesis of the Caravia-Berbes fluorite deposits of Asturias, Spain, from paleomagnetism. Ore Geology Reviews 80: 754-766.
  • Symons, D.T.A., Tornos, F., Kawasaki, K., Velasco, F., Rosales, I., 2015. Genetic constraints from paleomagnetic dating for the Aliva zinc-lead deposits, Picos de Europa Unit, northern Spain. Mineralium Deposita 50: 953-966.
  • Symons, D.T.A., McCausland, P.J.A., Kawasaki, K., Hart, C.J.R., 2015. Post-Triassic para-autochthoneity of the Yukon-Tanana Terrane: Paleomagnetism of the Early Cretaceous Quiet Lake Batholith. Geophysical Journal International 203: 312-326.
  • Zu, G., Xue, C., Zhao, Y., Qu, W., Li, C., Symons, D.T.A., Du, A., 2015. Late Cretaceous metallogeny in the Zhongdian area: Constraints from Re-Os dating of molybdenite and pyrrhotite from the Honshan Cu deposit, Yunnan, China. Ore Geology Reviews 64: 1-12.
  • Zhao, X., Xue, C., Symons, D.T.A., Zhang, Z., Wang, H., 2014. Microgranular enclaves in island-arc andesites: A possible link between known epithermal Au and potential porphyry Cu-Au deposits in the Tulasu ore cluster, western Tianshan, Xinjiang, China. Journal of Asian Earth Sciences 85: 210-223.
  • Kawasaki, K., Symons, D.T.A., 2014. Paleomagnetic dating of magmatic phases at the Cantung tungsten deposit, Northwest Territories, Canada. Canadian Journal of Earth Sciences 51: 32-52.
  • Symons, D.T.A., Kawasaki, K., Diehl, J.F., 2013. Age and genesis of the White Pine stratiform copper mineralization, northern Michigan, USA, from paleomagnetism. Geofluids 13: 112-126.
  • Kawasaki, K., Symons, D.T.A., 2012. Paleomagnetism of the Howards Pass Zn-Pb deposits, Yukon, Canada. Geophysical Journal International 190: 217-229.
  • Kawasaki, K., Symons, D.T.A., 2011. Paleomagnetism of the Mount Isa Zn-Pb-Cu-Ag and George Fisher Zn-Pb-Ag deposits, Australia. Australian Journal of Earth Sciences 58: 335-345.
  • Symons, D.T.A., Kawasaki, K., 2011. Eocene rotation of the Coast Plutonic Complex and Intermontane Belt: Paleomagnetism of Eocene plutons along the Klondike Highway. Canadian Journal of Earth Sciences 48: 645-660.
  • Symons, D.T.A., Kawasaki, K., Walther, S., Borg, G., 2011. Paleomagnetism of the Cu-Zn-Pb-bearing Kupferschiefer Black Shale (Upper Permian) at Sangerhausen, Germany. Mineralium Deposita 46: 137-152.
  • Kawasaki, K., Symons, D.T.A, Dawborn, T., 2010. Paleomagnetism of the world-class Century Zn-Pb-Ag deposits, Australia. Journal of Geochemical Exploration 106: 137-145.
  • Symons, D.T.A., Kawasaki, K., Pannalal, S.J., 2010. Paleomagnetic mapping of the regional fluid flow event that mineralized the Upper Mississippi Valley Zn-Pb Ore District, Wisconsin, U.S.A. Journal of Geochemical Exploration 106: 188-196.
  • Symons, D.T.A., 2009. Arthur Frederick Wells, P.Eng. (1880-1979): Engineer and Builder. In: Coghlan, P.C. and Chisholm, P.S. (eds.), Contributions to Professional Engineering, Association of Professional Engineers of Ontario, Toronto, p. 152-161.
  • Symons, D.T.A., Lewchuk, M.T., Kawasaki, K., Velasco, F., Leach, D.L., 2009. The Reocín zinc-lead deposit, Spain: paleomagnetic dating of a late Tertiary ore body. Mineralium Deposita 44: 867-880.
  • Symons, D.T.A., Smith, T.E., Kawasaki, K., Walawender, M.J., 2009. Paleomagnetism of the mid-Cretaceous gem-bearing pegmatite dikes of San Diego County, California, USA. Canadian Journal of Earth Sciences 46: 675-687.
  • Symons, D.T.A., Kawasaki, K., McCausland, P.J.A., 2009. The Yukon-Tanana terrane: Part of North America at 215 Ma from paleomagnetism of the Taylor Mountain batholith, Alaska. Tectonophysics 465: 60-74.
  • Pannalal, S.J., Symons, D.T.A., Sangster, D.F., 2008. Paleomagnetic evidence for an Early Permian age of the Lisheen Zn-Pb-Ag deposits, Ireland. Economic Geology 103: 1641-1655.
  • Kawasaki, K., Symons, D.T.A., 2008. Paleomagnetism of fluorite veins in the Devonian St. Lawrence granite, Newfoundland, Canada. Canadian Journal of Earth Sciences 45: 969-980.
  • Symons, D.T.A., Kawasaki, K., Hart, C.J.R., and Harris, M.J., 2008. A paleomagnetic test for northward tectonic transport of the eastern Selwyn Basin, northern Canadian Cordillera: Data from the mid-Cretaceous Ragged Pluton. Canadian Journal of Earth Sciences 47: 860-869.
  • Pannalal, S.J., Symons, D.T.A., and Sangster, D.F., 2008. Paleomagnetic evidence for an epigenetic Variscan model of ore genesis for the Galmoy zinc-lead deposit, Ireland. Terra Nova 20: 383-393.
  • Symons, D.T.A., Smith, T.E., and Blackburn, W.H., 2008. Constraining the travels of a "suspect" terrane: Paleomagnetism and geobarometry of two Early Cretaceous igneous complexes in the Peninsular Ranges Batholith, California. Geological Society of America Bulletin 120: 1159-1170.
  • Pannalal, S.J., Symons, D.T.A., and Leach, D.L., 2007. Paleomagnetic and mineral magnetic constraints on Zn-Pb ore genesis in the Pend Oreille Mine, Metaline district, Washington, U.S.A. Canadian Journal of Earth Sciences 44: 1661-1673.
  • Kawasaki, K., Symons, D.T.A., and Coveney, R.M., Jr., 2007. Paleomagnetism and rock magnetism of the Zn-rich Pennsylvanian Stark black shale, Kansas City area, U.S.A. Geophysical Journal International 171: 594-602.
  • Symons, D.T.A., 2007. Paleomagnetism of the HYC Zn-Pb SEDEX deposit, Australia: Evidence of an epigenetic origin. Economic Geology 102: 1295-1310.
  • Symons. D.T.A., Pannalal, S.J., Kawasaki, K., Sangster, D.F., and Stanley, G.A., 2007. Paleomagnetic age of the Magcobar Ba deposit, Silvermines, Ireland. In: Andrew, C.J. et al., Digging Deeper: Proceedings of the Society for Geology Applied to Mineral Deposits, Dublin, Ireland, August, 2007, Irish Association for Economic Geology, Dublin, p. 377-380.
  • Symons, D., and Williams, P., editors, 2007. Dating mineral deposits. In: Andrew, C.J. et al., eds. 2007, Digging Deeper: Proceedings of the Society for Geology Applied to Mineral Deposits, Dublin, Ireland, August 2007, Irish Association for Economic Geology, Dublin, p. 335-392.
  • Symons, D.T.A., and McCausland, P.J.A., 2006. Paleomagnetism of the Fort Knox Stock, Alaska, and rotation of the Yukon-Tanana Terrane after 92.5 Ma. Tectonophysics 419: 13-26.
  • Pannalal, S.J., Symons, D.T.A., Sangster, D.F., and Stanley, G.A., 2006. Brigantian and Middle Triassic remagnetizations in Lower Carboniferous carbonates, Northern Ireland: Role of diagenesis and fluid flow. Journal of Geochemical Exploration 89: 309-313.
  • Kawasaki, K., Symons, D.T.A., and Coveney, R.M., 2006. Preliminary paleomagnetic dating of the metalliferous (Zn-Pb rich) Stark black shale, Kansas City region, USA. Journal of Geochemical Exploration 89: 174-178.
  • Harris, M.J., Symons, D.T.A., Blackburn, W.H., Turek, A., and Peck, D.T., 2006. Paleomagnetism of the Wintering Lake pluton and the Early Proterozoic tectonic motion of the Superior Boundary Zone, Manitoba. Canadian Journal of Earth Sciences 43: 1071-1083.
  • McCausland, P.J.A., Symons, D.T.A., Hart, C.J.R., and Blackburn, W.H., 2006. Assembly of the northern Cordillera: New paleomagnetic evidence of coherent, moderate Jurassic to Eocene motion of the Intermontane belt and Yukon-Tanana terranes. In: J.W. Haggart, R.J. Enkin, and J.W.H. Monger, eds., Paleogeography of the North American Cordillera: Evidence for and against large-scale displacements., Geological Association of Canada, Special Paper 46, p. 147-170.
  • Symons, D.T.A., 2006. HYC (McArthur River) SEDEX deposit, Australia: First paleomagnetic results. Journal of Geochemical Exploration 89: 380-383.
  • Symons, D.T.A., Harris, M.J., and McCausland, P.J.A., 2006. Paleomagnetism of the ~91 Ma Deadman pluton: Post-mid-Cretaceous tectonic motion in central Yukon. In: D.S. Emond, G.D. Bradshaw, L.L. Lewis and L.H. Weston, eds., Yukon Exploration and Geology 2005, Yukon Geological Survey, p. 299-313.
  • Samson, I.M., Cioppa, M.T., and Symons, D.T.A., editors, 2006. Proceedings of Geofluids V, Fifth International Conference on Fluid Evolution, Migration and Interaction in Sedimentary Basins and Orogenic Belts, Windsor, Ontario, Canada, May 16th-21st, 2006, Journal of Geochemical Exploration 89 (1-3): 1-480.
  • McCausland, P.J.A., Symons, D.T.A., and Hart, C.J.R., 2005. Rethinking "Yellowstone in Yukon" and Baja British Columbia: Paleomagnetism of the Late Cretaceous Swede Dome stock, northern Canadian Cordillera. Journal of Geophysical Research-Solid Earth 110, B12107, doi:10.1029/2005JB003742, 2005.
  • Symons, D.T.A., and Arne, D.C., 2005. Paleomagnetic constraints on Zn-Pb ore genesis of the Pillara Mine, Lennard Shelf, Western Australia. Mineralium Deposita 39: 944-959.
  • Symons, D.T.A., Harris, M.J., McCausland, P.J.A., Blackburn, W.H., and Hart, C.J.R., 2005. Mesozoic-Cenozoic paleomagnetism of the Intermontane and Yukon-Tanana terranes, Canadian Cordillera. Canadian Journal of Earth Sciences 42: 1163-1185.
  • Symons, D.T.A., and Harris, M.J., 2005. Accretion history of the Trans-Hudson Orogen in Manitoba and Saskatchewan from paleomagnetism. Canadian Journal of Earth Sciences 42: 723-740.
  • Symons, D.T.A., Pannalal, S.J., Coveney, R.M., and Sangster, D.F., 2005. Paleomagnetism of late Paleozoic strata and mineralization in the Tri-State lead-zinc ore district. Economic Geology 100: 295-309.
  • Pannalal, S.J., Crowe, S.A., Cioppa, M.T., Symons, D.T.A., Sturm, A., and Fowle, D.A., 2005. Room-temperature magnetic properties of ferrihydrite: A potential magnetic remanence carrier? Earth and Planetary Science Letters 236: 856-870.
  • Symons, D.T.A., Hart, C.J.R., Harris, M.J., and McCausland, P.J.A., 2004. Paleomagnetism of the 53.6 Ma Flat Creek pluton, Yukon: Growth of the arcuate Mackenzie Mountains. In: A.J. Sussman and A.B. Weil, eds., Orogenic Curvature: Integrating Paleomagnetic and Structural Analyses, Geological Society of America Special Paper 383: p. 187-204.
  • Cioppa, M.T., Al-Aasm, I.S., Symons, D.T.A., and Gillen, K.P., 2004. Petrology, geochemistry and paleomagnetism of the Devonian "Upper" Member, Wabamun Group, Alberta, Canada: evidence for multiple fluid flow events? American Association of Petroleum Geologists, Hedberg Series 1: 331-346.
  • Lewchuk, M.T., Leach, D.L., Kelley, K.D., and Symons, D.T.A., 2004. Paleomagnetism of the Red Dog Zn-Pb massive sulfide deposit in northern Alaska. Economic Geology 99: 1555-1567.
  • Pannalal, S.J., Symons, D.T.A., and Sangster, D.F., 2004. Paleomagnetic dating of Upper Mississippi Valley zinc-lead mineralisation, WI, USA. Journal of Applied Geophysics 56: 135-153.
  • Bradley, D.C., Leach, D.L., Symons, D.T.A., Emsbo, P., Premo, W., Breit, G., and Sangster, D.F., 2004. Reply to Discussion on "Tectonic controls of Mississippi Valley-type lead-zinc mineralization in orogenic forelands" by S.E. Kesler, J.T. Christensen, R.D. Hagni, W. Heijlen, J.R. Kyle, K.C. Misra, P. Muchez, and R. van der Voo, Mineralium Deposita 39: 515-519.
  • Symons, D.T.A., 2004. Plate Tectonics. In: A.S. Goudie, editor, Encyclopedia of Geomorphology, Rutledge, London: p. 792-796.
  • Crowe, S.A., Pannalal, S.J., Fowle, D.A., Cioppa, M.T., Symons, D.T.A., Haffner, G.D., Fryer, B.J., McNeely, R.H., Sundby, B., and Hehanussa, P.E., 2004. Biochemical cycling in Fe-rich sediments from Lake Matano, Indonesia. Proc. 11th International Symposium on Water-Rock Interaction, USA, 2: 1185-1189.
  • Symons, D.T.A., Erdmer, P., and McCausland P.J.A., 2003. New 42 Ma cratonic North American paleomagnetic pole from the Yukon shows post-Eocene mobility of the Canadian Cordilleran terranes. Canadian Journal of Earth Sciences, 40: 1321-1334.
  • Harris M.J., Symons, D.T.A., Blackburn, W.H., Villeneuve, M.J., and Hart, C.J.R., 2003. Travels of the Cache Creek Terrane: A paleomagnetic, geobarometric and 40Ar/39Ar study of the Jurassic Fourth of July batholith, northernmost British Columbia, Canada. Tectonophysics 362: 137-159.
  • Symons, D.T.A., and Arne, D.C., 2003. Paleomagnetic dating of mineralization in the Kapok MVT deposit, Lennard Shelf, Western Australia. Journal of Geochemical Exploration 78-79: 267-273.
  • Pannalal, S.J., Symons, D.T.A., and Misra, K.C., 2003. Sweetwater Ba-F-Zn district, eastern Tennessee: A paleomagnetic age for dolomitisation from fluid flow. Journal of Geochemical Exploration 78-79: 235-242.
  • Symons, D.T.A., Walawender, M.J., Smith, T.E., Molnar, S.E., Harris, M.J., and Blackburn, W.H., 2003. Paleomagnetism and geobarometry of the La Posta Pluton, California. In: S.E. Johnson, S.R. Paterson, J.M. Fletcher, G.H. Girty, D.L. Kimbrough and A. Martin-Barajas, (eds.), Tectonic Evolution of Northwestern Mexico and the Southwestern USA., Boulder, Colorado, Geological Society of America Special Paper 374, p. 135-155.
  • Cioppa, M.T., Al-Aasm, I.S., Symons, D.T.A., and Gillen, K.P., 2003. Dating penecontemporaneous dolomitization: Paleomagnetic and geochemical constraints. American Association of Petroleum Geologists Bulletin 87: 71-88.
  • Symons, D.T.A., 2003. Age of the Navan Ireland, and East Tennessee, U.S.A., Zn-Pb deposits from paleomagnetism, and comments on the reliability of this dating method. Irish Association of Economic Geologists, Annual Review 2002: 25-26.
  • Cioppa, M.T., Symons, D.T.A., and Floré, M., 2002. Initial analysis of the Jurassic "Nordegg Member", Fernie Formation, using paleomagnetism to date source rock thermal maturation. Physics and Chemistry of the Earth 27: 1161-1168.
  • Symons, D.T.A., and Cioppa, M.T., 2002. Conodont CAI and magnetic mineral unblocking temperatures: Implications for the Western Canada Sedimentary Basin. Physics and Chemistry of the Earth 27: 1189-1194. 
  • Symons , D.T.A., and Statakos, K.K., 2002. Paleomagnetic dating of Alleghanian orogenesis and mineralization in the Mascot-Jefferson City district of East Tennessee, U.S.A. Tectonophysics 348: 51-72.
  • Cioppa, M.T., Symons, D.T.A., Al-Aasm, I.S., and Gillen, K.P., 2002. Evaluating the timing of hydrocarbon generations in the Devonian Duvernay Formation: Paleomagnetic, rock magnetic and geochemical evidence. Marine and Petroleum Geology 19: 275-287.
  • Harris, M.J., Symons, D.T.A., and Hart, C.J.R., 2002. No remagnetization in plutonic rocks of the Whitehorse Trough, southern Yukon: An extensive paleomagnetic conglomerate test. Yukon Exploration Geology 2002: 111-124.
  • Leach, D.L. Bradley, D., Lewchuk, M., Symons, D.T.A., Premo, W., Brannon, J., and de Marsily, G., 2002. Reply to Discussion on "Mississippi Valley-type lead-zinc deposits through geological time: implications from recent age-dating research" by S.E. Kesler and C.W. Carrigan (2001), Mineralium Deposita 36: 711-740.
  • Symons, D.T.A., Smethurst, M.T., and Ashton, J.H., 2002. Paleomagnetism of the Navan Zn-Pb deposit, Ireland. Economic Geology 97: 997-1012.
  • McCausland, P.J.A., Symons, D.T.A., and Hart, C.J.R. 2002. A late Paleozoic test of northwards terrane motions? Preliminary paleomagnetism of the 56 Ma Pattison pluton, western Yukon. Lithoprobe Report 82: 32-28.
  • McCausland, P.J.A., Symons, D.T.A., Hart, C.J.R., and Blackburn, W.H., 2002. Paleomagnetism and geobarometry of the Granite Mountain batholith, Yukon: Minimal geotectonic motion of the Yukon-Tanana Terrane relative to North America. Yukon Exploration Geology, 2001: 163-177.
  • Harris, M.J., Symons, D.T.A., Turek, A., Peck, D.C., and Blackburn, W.H., 2001. Paleomagnetic summary of the Early Proterozoic Mystery Lake and Fox Lake granites, Superior Boundary Zone, eastern Manitoba. Lithoprobe Report 80: 127-135.
  • Harris, M.J., Symons, D.T.A., Peck, D.C., Blackburn, W.H. and Turek, A., 2001. Pegmatite remagnetization at about 1.7 Ga in the southern Thompson Nickel Belt, from paleomagnetism; in Report of Activities 2001, Manitoba Industry, Trade and Mines, Manitoba Geological Survey, p. 59-66.
  • Leach, D.L., Bradley, D., Lewchuk, M., Symons, D.T.A., Brannon, J, and de Marsily, G., 2001. Mississippi Valley-type lead-zinc deposits through geological time: Implications from recent age-dating research. Mineralium Deposita 36: 711-740.
  • McCausland, P.J.A., Symons, D.T.A., Hart, C.J.R., and Blackburn, W.H., 2001. Paleomagnetic study of the Late Cretaceous Seymour Creek stock, Yukon: Minimal geotectonic motion of the Yukon-Tanana terrace. Yukon Exploration Geology 2000: 207-216.
  • Cioppa, M.T., Lonnee, J.S., Al-Aasm, I.S., Symons, D.T.A., and Gillen, K.P., 2001. Facies and lithologic controls on paleomagnetism: an example from the Rainbow South Field, Alberta, Canada, Bulletin of Petroleum Geology 49: 393-407.
  • McCausland, P.J.A., Symons, D.T.A., Hart, C.J.R., and Blackburn, W.H., 2001. Preliminary paleomagnetism and geothermobarometry of the Granite Mountain batholith, Yukon: Minimal geotectonic motion of the Yukon-Tanana terrane relative to North America. Lithoprobe Report 79: 86-93.
  • Symons, D.T.A., Hart, C.J.R., Harris M.J., and McCausland, P.J.A., 2001. A preliminary location for the Stikine terrane at 53.6 Ma: Paleomagnetism of the Flat Creek pluton in the Yukon. Lithoprobe Report 79: 94-98.
  • Symons, D.T.A., and Harris, M.J., 2000. The ~1830 Ma Trans-Hudson hairpin from paleomagnetism of the Wapisu Gneiss Dome, Kisseynew Domain, Manitoba. Canadian Journal of Earth Sciences 37: 913-922.
  • McCausland, P.J.A., Symons, D.T.A., Hart, C.J.R., and Blackburn W.H., 2000. Paleomagnetic study of the Late Cretaceous Seymour Creek stock, Yukon: Minimal geotectonic motion of the Yukon-Tanana terrane. Yukon Exploration and Geology 2000: 207-216.
  • Harris, M.J., Symons, D.T.A., Blackburn, W.H., Peck, D.C., and Turek, A., 2000. The Split Lake Block of the Superior Boundary Zone: Petrologic, paleomagnetic and geobarometric data for the ~1811 Ma Fox Lake Pluton (NTS 64A/1.8). Manitoba Geological Survey Report of Activities 2000: 26-37.
  • Cioppa, M.T., Gillen, K.P., Lewchuk, M.T., and Symons D.T.A., 2000. Orienting drill core: old and new paleomagnetic methods. Oil and Gas Journal 98.21: 46-53.
  • Harris, M.J., Symons, D.T.A., Turek, A., Peck, D.C., and Blackburn, W.H., 2000. The Superior Boundary Zone: Implication derived from recent paleomagnetic results on the Mystery Lake pluton. Lithoprobe Report 77: 51-59.
  • Harris, M.J., Symons, D.T.A., Blackburn, W.H., and McCausland, P.J.A., 2000. Paleomagnetic evidence for the tectonic motions of the terranes underlying the northern Intermontane belt, Canadian Cordillera: A summary. Lithoprobe Report 72: 155-164.
  • McCausland, P.J.A., Symons, D.T.A., Hart, C.J.R., and Blackburn W.H., 2000. Minimal geotectonic motion of the Yukon-Tanana terrane relative to North America: preliminary paleomagnetic results from the Dawson Range batholith. Lithoprobe Report 72: 146-154.
  • Harris, M.J., Symons, D.T.A., Turek, A., Blackburn, W.H., and Peck, D.C., 2000. Tectonic analysis of the Trans-Hudson orogen and Superior craton from 1840 to 1770 Ma from paleomagnetism with geobarometric corrections: Progress report. Lithoprobe Report 70: 132-135.
  • Cioppa, M.T., and Symons, D.T.A., 2000. Timing hydrocarbon generation and migration: paleomagnetic and rock magnetic analysis of the Devonian Duvernay Formation, Alberta, Canada. Journal of Geochemical Exploration 69-70: 387-390.
  • Symons, D.T.A., and Cioppa, M.T., 2000. Crossover plots: a useful method for displaying SIRM data in paleomagnetism. Geophysical Research Letters 27: 1779-1782.
  • Cioppa, M.T., Symons, D.T.A., Al-Aasm, I.S., Lewchuk, M.T., and Gillen, K.P., 2000. Correlating petrologic, geochemical and petrographic evidence to date diagenetic and fluid flow events in the Mississippian Turner Valley Formation Moose Field, Alberta, Canada. Sedimentary Geology 131: 109-129.
  • Symons, D.T.A., and Stratakos, K.K., 2000. Paleomagnetic dating of dolomitization and Mississippi Valley-type mineralization in the Mascot-Jefferson City district of eastern Tennessee: a preliminary analysis. Journal of Geochemical Exploration 69-70: 373-376.
  • Symons, D.T.A., Symons, T.B., and Sangster, D.F., 2000. Paleomagnetism of the Society Cliffs dolostone and the age of the Nanisivik zinc deposit, Baffin Island, Canada. Mineralium Deposita 35: 672-682.
  • Symons, D.T.A., Lewchuk, M.T., Taylor, C.D., and Harris, M.J., 2000. Age of the Sherman-type Zn-Pb-Ag deposits, Mosquito Range, Colorado, USA. Economic Geology 95: 1489-1504.
  • Symons, D.T.A., Harris, M.J., Gabites, J.E., and Hart, C.J.R., 2000. Eocene (51 Ma) end to northward translation of the Coast plutonic complex: Paleomagnetism and K-Ar dating of the White Pass dikes. Tectonophysics 326: 93-109.
  • Symons, D.T.A., Williams, P.R., McCausland, P.J.A., Harris, M.J., Hart, C.J.R., and Blackburn W.H., 2000. Paleomagnetism and geobarometry of the Big Creek batholith suggests that the Yukon-Tanana terrane has been a parautochthon since Early Jurassic. Tectonophysics 326: 57-72.
  • Symons, D.T.A., Symons, T.B., and Lewchuk, M.T., 2000. Paleomagnetism of the Deschambault pegmatites: Stillstand and hairpin at the end of the Paleoproterozoic Trans-Hudson orogeny. Physics and Chemistry of the Earth 25: 479-487.
  • Lewchuk, M.T., Al-Aasm, I.S., Symons, D.T.A., and Gillen, K.P., 2000. Late Laramide dolomitization of the Husky Rainbow "A" hydrocarbon reservoir, northwestern Alberta, Canada: Paleomagnetic and geochemical evidence. Canadian Journal of Earth Sciences 37: 17-29.
  • Symons, D.T.A., Symons, T.B., and Lewchuk, M.T., 1999. Paleomagnetism of post-tectonic Paleoproterozoic plutons in the Viney Lake area (NTS 65 L-14), southeastern Glennie Domain, Trans-Hudson Orogen. Saskatchewan Geological Survey Miscellaneous Report 99-4: 140-147.
  • Harris, M.J., Symons, D.T.A., Peck, D.C., Turek, A., and Blackburn, W.H., 1999. Tectonic history of the waning stages of the Trans-Hudson Orogen: paleomagnetic data for the 1836 Ma Mystery Lake pluton from the Superior Boundary Zone (NTS 63P/ 13). Manitoba Energy and Mines, Minerals Division, Report of Activities 1999: 27-32.
  • Smethurst, M.T., Symons, D.T.A., Sangster, D.F., and Lewchuk, M. T., 1999. Paleomagnetic age for Zn-Pb mineralization at Robb Lake, northeastern British Columbia. Bulletin of the Canadian Petroleum Geology 47: 548-555.
  • Symons, D.T.A., Enkin, R.J., and Cioppa, M.T., 1999. Paleomagnetism in the Western Canada Sedimentary Basin: Dating fluid flow and deformation events. Bulletin of the Canadian Petroleum Geology 47: 534-547.
  • Harris, M.J., Symons, D.T.A., Blackburn, W.H., and Hart, C.J.R., 1999. Paleomagnetic and geobarometric study of the Late Cretaceous Mount Lorne Stock, southern Yukon Territory. Canadian Journal of Earth Sciences 36: 905-915.
  • Symons, D., McCausland, P.J.A., Hart, C.J.R., Blackburn, W.H., Harris, M.J., and Williams, P.R., 1999. Geotectonic motion history of the Yukon-Tanana terrane: Preliminary results from the Big Creek and Seymour Creek intrusions. Lithoprobe Report 69: 153-162.
  • Symons, D.T.A., Lewchuk, M.T., and Sangster, D.F., 1998. Laramide orogenic fluid flow into the Western Canada Sedimentary Basin: Evidence from paleomagnetic dating of the Kicking Horse Mississippi Valley-type ore deposit. Economic Geology 93: 68-83.
  • Harris, M.J., Symons, D.T.A., Hart, C.J.R., and Blackburn, W.H., 1998. Jurassic plate motions of the Yukon: A paleomagnetic study of the Teslin Crossing Stock (NTS 105E/7). Yukon Exploration and Geology 1998, Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada: 155-166.
  • Symons, D.T.A., and Harris, M.J., 1998. Paleomagnetic data from the Big Island gneiss dome at Kisseynew Lake (NTS 63N/3). Manitoba Energy and Mines Report of Activities 1998: 25-31.
  • Harris, M.J., Symons, D.T.A., Blackburn W.H., Peck, D.C., and Turek, A., 1998. Tectonic analysis of the accretion of the Trans-Hudson Orogen to the Superior craton from paleomagnetism with geobarometric corrections: progress report (parts of NTS Areas 63 O, 63 P, 64 A). Manitoba Energy and Mines Report of Activities 1998: 66-68.
  • Symons, D.T.A., and MacKay, C.D., 1998. Paleomagnetism of the Boot-Phantom pluton and the amalgamation of the juvenile domains in the Paleoproterozoic Trans-Hudson Orogen, Canada. Proceedings of the Basement Tectonics Series, Kluwer, Dordrecht, The Netherlands 13: 313-331.
  • Lewchuk, M.T., Al-Aasm, I.S., Symons, D.T.A., and Gillen, K.P., 1998. Dolomitization of Mississippian carbonates in the Shell Waterton gas field, southwestern Alberta: Insights from paleomagnetism, petrology and geochemistry. Bulletin of Canadian Petroleum Geology 46: 387-410.
  • Symons, D.T.A., Sangster, D.F., and Leach, D.L., 1998. Paleomagnetism of the Mississippi Valley-type Pb-Zn deposits of Upper Silesia, Poland. In: Gorecka, E., and Leach, D.L., (Eds.), Carbonate-hosted Zinc-lead deposits in the Silesia-Cracow area, Prace, Panstowowege Inst. Geol. Wydawnictwa, Warsaw, Poland: 151-162.
  • Symons, D.T.A., Lewchuk, M.T., and Leach, D.L., 1998. Age and duration of the Mississippi Valley-type mineralizing fluid flow event in the Viburnum Trend, southeast Missouri, U.S.A., from palaeomagnetism. Geological Society of London Special Publication 144: 27-39.
  • Gala, M.G., Symons, D.T.A., and Palmer, H.C., 1998. Geotectonics of the Hanson Lake block, Trans-Hudson orogen, central Canada: a preliminary paleomagnetic report. Precambrian Research 90: 85-101.
  • Symons, D.T.A., 1998. Precambrian plate tectonic models: shifting the paleomagnetic paradigm for orogens such as the Trans-Hudson in Canada. Physics and Chemistry of the Earth 23: 753-759.
  • Symons, D., Harris, M., Hart, C., and Blackburn, W., 1998. Geotectonics in the northern Cordillera from paleomagnetism and geobarometry: Progress report and recent results from the Eocene White Pass dikes and Jurassic Fourth of July batholith. Lithoprobe Report 64: 171-180.
  • Symons, D.T.A., Harris, M.J., Blackburn, W.H., and Hart, C.J.R., 1997. Paleomagnetic determination of the geotectonic displacement of the northern Intermontane Belt: Progress report and recent results. Lithoprobe Report 56: 77-86.
  • Harris, M.J., Symons, D.T.A., Blackburn, W.H., and Hart, C.J.R., 1997. Paleomagnetic and geobarometric study of the mid Cretaceous Whitehorse pluton, Yukon Territory. Canadian Journal of Earth Sciences 34: 1379-1391.
  • Symons, D.T.A., Smethurst, M.T., Sangster, D.F., and Mountjoy, E.W., 1997. Paleomagnetic dating of fluid flows recorded in hydrothermal dolomite and Robb Lake Pb-Zn mineralization in the Rocky Mountains. Lithoprobe Report 59: 165-169.
  • Symons, D.T.A., Lewchuk, M.T., and Leach, D.L., 1997. Paleomagnetic dating of early versus late galena in Mississippi Valley-type ores of the Viburnum Trend, southeast Missouri, U.S.A: a preliminary analysis. Geofluids II, Belfast, Northern Ireland, March 10-14, 1997: 59-62.
  • Symons, D.T.A., 1996. Paleomagnetic dating of MVT ore genesis and orogenesis. Irish Association for Economic Geology, Annual Review 1996: 46-47.
  • Harris, M.J., Symons, D.T.A., Blackburn, W.H., and Hart, C.J.R., 1996. Paleomagnetic study of the mid-Cretaceous Mount McIntyre pluton, Whitehorse map area (105D), southern Yukon Territory. Yukon Exploration and Geology 1996: 124-132.
  • Symons, D.T.A., Radigan, S.P., and Lewchuk, M.T., 1996. Paleomagnetism of the Davin Lake granitoids, Rottenstone domain, Trans-Hudson orogen (part of NTS 64D-12 and 13). Saskatchewan Geological Survey Miscellaneous Report 96-4: 111-118.
  • Symons, D.T.A., Gala, M., Palmer, H.C., Lewchuk, M.T., and Harris, M.J., 1996. Paleomagnetic studies in the Trans-Hudson orogen: progress report and abstract of Baldock batholith results. Lithoprobe Report 55: 69-72.
  • Symons, D.T.A., Lewchuk, M.T., Simandl, G.J., and Sangster, D.F., 1996. Paleomagnetic evidence of Laramide fluid flow in the Cambrian dolostone host rocks of the Mt. Brussilof magnesite deposit, southeastern British Columbia. Lithoprobe Report 51: 234-236.
  • Symons, D.T.A., Harris, M.J., Blackburn, W.H., and Hart, C.J.R., 1996. Paleomagnetic determination of the geotectonic displacement of the northern Intermontane, Yukon: progress report and preliminary results from the Whitehorse pluton. Lithoprobe Report 50: 118-131.
  • Symons, D.T.A., Lewchuk, M.T., Simandl, G.J., and Sangster, D.F., 1996. Paleomagnetism of the Mount Brussilof magnesite deposit and its Cambrian host rocks, southeastern British Columbia (NTS 82 J/11, 12, 13). British Columbia Ministry of Energy, Mines and Petroleum Resources Paper 1996-1: 307-315.
  • Symons, D.T.A., Lewchuk, M.T., and Harris, M.J., 1996. Paleomagnetism of the Paleoproterozoic Baldock batholith (NTS 64B/14). Manitoba Energy, Mines and Minerals Division, Report of Activities 1996: 14-20.
  • Symons, D.T.A., Sangster, D.F., and Leach, D.L., 1996. Paleomagnetic dating of Mississippi Valley-type Pb-Zn-Ba deposits. In: Sangster, D.F. (Ed.), Carbonate-hosted Lead-Zinc Deposits, Society of Economic Geologists, Special Volume 4, pp. 515-526.
  • Lewchuk, M.T., and Symons, D.T.A., 1996. Paleomagnetism of Paleozoic carbonates in the Illinois-Kentucky-Tennessee area: the recording of fluid flow events. In: Sangster, D.F. (Ed.), Carbonate-hosted Lead-Zinc Deposits, Society of Economic Geologists, Special Volume 4, pp. 555-556.
  • Lewchuk, M.T., and Symons, D.T.A., 1996. Paleomagnetism and genesis of the Central Tennessee Mississippi Valley-type ore district, In: Sangster, D.F. (Ed.), Carbonate-hosted Lead-Zinc Deposits. Society of Economic Geologists, Special Volume 4, pp. 567-576.
  • Symons, D.T.A., Lewchuk, M.T., and Boyle, D.R., 1996. Pliocene-Pleistocene genesis for the Murray Brook and Heath Steele Au-Ag gossan ore deposits. Canadian Journal of Earth Sciences 37: 1-11.
  • Gala, M.G., Symons, D.T.A., and Palmer, H.C., 1995. Paleomagnetism of the Jan Lake granite, Trans-Hudson orogen. Saskatchewan Geological Survey Miscellaneous Report 95-4: 145-152.
  • Symons, D.T.A., 1995. Paleomagnetism of the 1851 Reynard Lake pluton, Flin Flon domain, Trans-Hudson orogen: Geotectonic implications. Saskatchewan Geological Survey Miscellaneous Report 95-4: 137-144.
  • Harris, M.J., Symons, D.T.A., and Hart, C.J.R., 1995. Paleomagnetism of the Cretaceous Whitehorse and Mount McIntyre plutons, Stikinia terrane, Yukon Territory. Lithoprobe Report 44: 92-96.
  • Lewchuk, M.T., and Symons, D.T.A., 1995. Paleomagnetic dating of the Elmwood-Gordonsville MVT deposit, central Tennessee. Society of Economic Geologists, St. Louis Meeting, Denver, CO., p. 181-184.
  • Lewchuk, M.T., and Symons, D.T.A., 1995. A regional paleomagnetic study of carbonates surrounding MVT orebodies in the Illinois-Kentucky-Tennessee area. Society of Economic Geologists, St. Louis Meeting, Denver, CO., p. 185-188.
  • Symons, D.T.A., 1995. Summary of paleomagnetic dating studies of Mississippi Valley-type deposits. Society of Economic Geologists, St. Louis Meeting, Denver, CO., p. 308-313.
  • Symons, D.T.A., Gala, M., and Palmer, H.C., 1995. Fitting paleomagnetic data to a plate tectonic model for the Trans-Hudson orogen with a focus on the Hanson Lake block. Lithoprobe Report 48: 66-77.
  • Symons, D.T.A., Sangster, D.F., and Leach, D.L., 1995. A Tertiary age from paleomagnetism for the Mississippi Valley-type mineralization in Upper Silesia, Poland. Economic Geology 90: 782-794.
  • Lewchuk, M.T., and Symons, D.T.A., 1995. Age and duration of Mississippi Valley-type (MVT) Pb-Zn-Ba-F mineralizing events. Geology 23: 233-236.
  • Symons, D.T.A., 1994. Geotectonics of the Peter Lake Domain in the Proterozoic Trans-Hudson orogenic belt of Saskatchewan, Canada, from paleomagnetism. Precambrian Research 69: 11-24.
  • Symons, D.T.A., Lewchuk, M.T., Lohnes, C.A., and Radigan, S.P., 1994. Geotectonic constraints from paleomagnetism of the Macoun Lake and Davin Lake complexes, western Trans-Hudson Orogen. Lithoprobe Report 38: 18-26.
  • Symons, D.T.A., and Lewchuk, M.T., 1994. Paleomagnetic test of Missi conglomerate clasts, Flin Flon Domain, Trans-Hudson orogen. Saskatchewan Geological Survey Miscellaneous Report 94-4: 111-115.
  • Gala, M.G., Symons, D.T.A., and Palmer, H.C., 1994. Paleomagnetism of the Hanson Lake Pluton, Hanson Lake block, Trans-Hudson orogen and its geotectonic implications. Saskatchewan Geological Survey Miscellaneous Report 94-4: 116-122.
  • Symons, D.T.A., Lohnes, C.A., and Lewchuk, M.T., 1994. Geotectonic constraints from paleomagnetism of the Macoun Lake granodiorite, Lynn Lake - La Ronge domain, Trans-Hudson Orogen (parts of NTS 64 D/5 and D12). Saskatchewan Geological Survey Miscellaneous Report 94-4: 123-131.
  • Symons, D.T.A., and Sangster, D.F., 1994. Paleomagnetic methods for dating the genesis of Mississippi Valley-type lead-zinc deposits. In: Fontboté, L., and Boni, M., (Eds.), Sediment-hosted Zn-Pb Deposits, Springer-Verlag, Berlin-New York, pp. 42-58.
  • Symons, D.T.A., 1994. Paleomagnetism and the Late Jurassic genesis of the Illinois-Kentucky fluorspar deposits. Economic Geology 89: 438-449.
  • Symons, D.T.A., Lewchuk, M.T., Dunlop, D.J., Costanzo-Alvarex, V., Halls, H.C., Bates, M.P., Palmer, H.C., and Vandall, T.A., 1994. Synopsis of paleomagnetic studies in the Kapuskasing structural zone. Canadian Journal of Earth Sciences 31: 1206-1217.
  • Meert, J.G., Van der Voo, R., Powell, C.M., Li, Z-X., McElhinny, M.W., Chen, Z., and Symons, D.T.A., 1993. A plate tectonic speed limit? Nature 363: 217-218.
  • Symons, D.T.A., 1993. Paleomagnetic studies in the Trans-Hudson orogen of Saskatchewan, emphasizing results from the Reynard Lake pluton. Lithoprobe Report 34: 72-76.
  • Pan, H., and Symons, D.T.A., 1993. The Pictou Redbeds' Pennsylvanian pole: Could Phanerozoic rocks in interior U.S.A. be remagnetized? Journal of Geophysical Research 98: 6227-6235.
  • Pan, H., Symons, D.T.A., and Sangster, D.F., 1993. Paleomagnetism of the Gays River lead-zinc deposit, Nova Scotia: Pennsylvanian ore genesis. Geophysical Research Letters 20: 1159-1162.
  • Pan, H., and Symons, D.T.A., 1993. Paleomagnetism of the Mississippi Valley-type Newfoundland zinc deposit: evidence for Devonian ore genesis and host rock remagnetization in the northern Appalachians. Journal of Geophysical Research 98: 22415-22427.
  • Symons, D.T.A., Pan, H. Sangster, D.F., and Jowett, E.C., 1993. Paleomagnetism of the Pine Point Zn-Pb deposits. Canadian Journal of Earth Sciences 30: 1028-1036.
  • Symons, D.T.A., and Timmins, E.A., 1992. Geotectonics of the cratonic margin from paleomagnetism of the Middle Proterozoic Aldridge (Prichard) Formation and Moyie Sills of British Columbia and Montana. In: M.J. Bartholomew, D.W. Hyndman, D.W. Mogk, and R. Mason (Eds.), Basement Tectonics 8: Characterization and comparison of ancient and Mesozoic Continental margins, Kluwer Publ., Dordrecht, The Netherlands, pp. 373-384.
  • Symons, D.T.A., 1992. Paleomagnetism of gabbroic rocks in the Peter Lake domain, Trans-Hudson orogen, Saskatchewan. Lithoprobe Report 26: 129-134.
  • Symons, D.T.A., 1992. Paleomagnetism of the Chipman Lake and Seabrook Lake carbonate complexes. Canadian Journal of Earth Sciences 29: 1215-1223.
  • Symons, D.T.A., and Sangster, D.F., 1992. Late Devonian paleomagnetic age for the Polaris Mississippi Valley-type Zn-Pb deposit, Canadian Arctic Archipelago. Canadian Journal of Earth Sciences 29: 15-25.
  • Symons, D.T.A., 1991. Measuring the closure of the Trans-Hudson orogen by paleomagnetism. Lithoprobe Report 12: 28-29.
  • Symons, D.T.A., 1991. Paleomagnetism of the Proterozoic Wathaman batholith and the suturing of the Trans-Hudson orogen in Saskatchewan. Canadian Journal of Earth Sciences 28: 1931-1938.
  • Sangster, D.F., and Symons, D.T.A., 1991. Methodology and genetic implications of the paleomagnetic dating of Mississippi Valley-type lead-zinc deposits in the midcontinental region of the U.S.A. In: Pagel, M., and Leroy, J.L. (Eds.), Source, Transport and Deposition of Minerals, Balkema, Rotterdam, p. 413-416.
  • Symons, D.T.A., and Chiasson, A.D., 1991. Paleomagnetism of the Callander Bay complex and the Cambrian apparent polar wander path for North America. Canadian Journal of Earth Sciences 18: 355-363.
  • Symons, D.T.A., and Sangster, D.F., 1991. Paleomagnetic age of the Central Missouri barite deposits and its genetic implications. Economic Geology 86: 1-12.
  • Dunsmore, D.J., and Symons, D.T.A., 1990. Paleomagnetism of the Lynn Lake gabbros in the Trans Hudson Orogen and closure of the Superior and Slave cratons. Geological Association of Canada Special Paper 37: 215 228.
  • Symons, D.T.A., 1990. What Earth Scientists think about NSERCs star system, Geoscience Canada 17: 90-92.
  • Vandall, T.A., and Symons, D.T.A., 1990. Paleomagnetism of Archean granites and Matachewan dikes in the Wawa subprovince, Ontario: Re-evaluation of the Archean apparent polar wander path. Canadian Journal of Earth Sciences 27: 1031-1039.
  • Symons, D.T.A., 1990. The Permian pole: Evidence from the Pictou red beds of Prince Edward Island, Canada. Geology 18: 234-237.
  • Lewchuk, M.T., and Symons, D.T.A., 1990. Paleomagnetism of the Late Precambrian Coldwell Complex, Ontario, Canada. Tectonophysics 184: 73-86.
  • Symons, D.T.A., and Vandall, T.A., 1990. Paleomagnetic evidence for Proterozoic tectonism in the Kapuskasing structural zone, Ontario. Journal of Geophysical Research 95: 19199-19211.
  • Pan, H., Symons, D.T.A., and Sangster, D.F., 1990. Paleomagnetism of the Mississippi-Valley type ores and host rocks in the Northern Arkansas and Tri-State Districts. Canadian Journal of Earth Sciences 27: 923-931.
  • Lewchuk, M.T., and Symons, D.T.A., 1990. Paleomagnetism of the Clay Howells carbonatite complex and Keweenawan motion on the KSZ. Tectonophysics 172: 67-75.
  • Symons, D.T.A., Lewchuk, M.T., and Vandall, T.A., 1989, Paleomagnetic definition of KSZ geotectonic rotations. Lithoprobe Kapuskasing Structural Zone Workshop II: 205-210.
  • Symons, D.T.A., 1989, Editor, Changing Social Values and the Family. Canterbury College, University of Windsor Press, Windsor, ON, Canada, 70 pp.
  • Symons, D.T.A., and Lewchuk, M.T., 1989. Paleomagnetism of the Mississippian HP pipe and the western margin of the North American craton. Geophysical Monograph of the American Geophysical Union 50: 113-125.
  • Symons, D.T.A., 1989. Age of the Firesand River carbonatite complex from paleomagnetism. Canadian Journal of Earth Sciences 26: 2401-2405.
  • Symons, D.T.A., 1989. Paleomagnetism of the 1.1 Ga Lackner Lake complex and tectonics of the Kapuskasing structural zone. Canadian Journal of Earth Sciences 26: 1778-1783.
  • Symons, D.T.A., and Wellings, M.R., 1989. Paleomagnetism of the Eocene Kamloops Group and the cratonization of Terrane I of the Canadian Cordillera. Canadian Journal of Earth Sciences 26: 821-828.
  • Symons, D.T.A., Bormann, R.E., and Jans, R.P., 1989. Paleomagnetism of the Triassic red beds of the lower Fundy Group and Mesozoic tectonism of the Nova Scotia Platform, Canada. Tectonophysics 164: 13-24.
  • Symons, D.T.A., 1988. Geotectonic implications for the KSZ from paleomagnetic analysis of the Lackner Lake Complex. Lithoprobe Kapuskasing Structural Zone Transect Workshop 1988: 54-60.
  • Symons, D.T.A., 1987. Memorial to Conrad Gravenor, 1923-1986. Proceedings of the Geological Society of America 1987: 1-4.
  • Turek, A., Smith, P.E., and Symons, D.T.A., 1986. U/Pb geochronology of the Coldwell Complex, northwestern Ontario, Canada: Reply. Canadian Journal of Earth Sciences 23: 127-128.
  • Gravenor, C.P., and Symons, D.T.A., 1985. A fast and accurate paleomagnetic sampler for field use: a discussion. Boreas 14: 154.
  • Turek, A., Smith, P.E., and Symons, D.T.A., 1985. U/Pb geochronology of the Coldwell Complex, northwestern Ontario, Canada. Canadian Journal of Earth Sciences 22: 621-626.
  • Symons, D.T.A., 1984. Paleomagnetism of the Triassic Nicola volcanics and geotectonics of the Quesnellia Subterrane of Terrane I, British Columbia. Geodynamics 2: 229-244.
  • Symons, D.T.A., 1984. Paleomagnetism of the Westcoast Complex and geotectonics of the Vancouver Island segment of the Wrangellian subterrane. Geodynamics 2: 211-228.
  • Gravenor, C.P., Symons, D.T.A., and Coyle, D.A., 1984. Errors in the anisotropy of magnetic susceptibility and magnetic remanence of unconsolidated sediments produced by sampling methods. Geophysical Research Letters 11: 836-839.
  • Symons, D.T.A., and Litalien, C.R., 1984. Paleomagnetism of the Lower Jurassic Copper Mountain intrusions and the geotectonics of Terrane I, British Columbia. Geophysical Research Letters 11: 685-688.
  • Seguin, M.K., Sharma, K.N.M., Woussen, G., St. Seymour, K., and Symons, D.T.A., 1983. Paleomagnetism of the Archean volcanics and Proterozoic dikes in La Grande Riviere area of Nouveau Quebec. Canadian Journal of Earth Sciences 20: 339-342.
  • Stupavsky, M., and Symons, D.T.A., 1983. Penokean remagnetization of the basal Huronian Dollyberry Lake basalts near Elliot Lake, Ontario. Canadian Journal of Earth Sciences 20: 49-56.
  • Symons, D.T.A., 1983. New paleomagnetic data for the Triassic Guichon batholith of south-central British Columbia and their bearing on Terrane I tectonics. Canadian Journal of Earth Sciences 20: 1340-1343.
  • Symons, D.T.A., 1983. Further paleomagnetic results from the Jurassic Topley Intrusions in the Stikinia subterrane of British Columbia. Geophysical Research Letters 10: 1065-1068.
  • Symons, D.T.A., Osmani, I.A., and Stupavsky, M., 1983. Magnetization characteristics of the Algoman iron formation and host rocks at the Griffith Mine, Red Lake, Ontario. Ontario Geological Survey, Open File Report 5447: 19-57.
  • Symons, D.T.A., and Stupavsky, M., 1983. Component magnetization of Algoman banded iron formations in Ontario. Ontario Geological Survey, Open File Report 5447: 1-18.
  • Symons, D.T.A., and Stupavsky, M., 1983. Analysis of aeromagnetic anomalies over Algoman-type iron formations. Ontario Geological Survey, Open File Report 5476, 90 pp.
  • Stupavsky, M., and Symons, D.T.A., 1982. Isolation of early Paleohelikian remanence in Grenville anorthosites of the French River area, Ontario. Canadian Journal of Earth Sciences 19: 819-828.
  • Stupavsky, M. and Symons, D.T.A., 1982. Extent of Grenvillian remanence components in rocks of the Southern Province. Canadian Journal of Earth Sciences 19: 698-708.
  • Stupavsky, M., Symons, D.T.A., and Gravenor, C.P., 1982. Evidence for metamorphic remagnetization of upper Precambrian tillite in the Dalradian Supergroup of Scotland. Transactions of the Royal Society of Edinburgh, Earth Sciences 73: 59-65.
  • Symons, D.T.A., Quick, A.W., and Stupavsky, M., 1981. Magnetic and paleomagnetic characteristics of the Archean iron formation and host rocks at the Adams Mine, Ontario. Ontario Geological Survey, Misc. Paper 98: 293-307.
  • Kapnistos, M. and Symons, D.T.A., 1980. Location of pinnacle reefs in southwestern Ontario by gravity. Canadian Institute of Mining Bulletin 73: 95-99.
  • Symons, D.T.A., Stupavsky, M., and Gravenor, C.P., 1980. Remanence resetting by shock induced thixotrophy in the Seminary Till, Scarborough, Ontario, Bulletin of the Geological Society of America 91, pt. I: 593-598.
  • Symons, D.T.A., Walley, D.A., and Stupavsky, M., 1980. Component magnetization of the Algoman iron formation and host rocks, Moose Mountain Mine, Ontario. Ontario Geological Survey, Misc. Paper 93: 198-214.
  • Symons, D.T.A., and Stupavsky, M., 1980. Magnetic anomaly type curves and paleomagnetism of the Algoman-type iron formation near Temagami, Ontario. Ontario Geological Survey, Misc. Paper 93: 215-229.
  • Symons, D.T.A., Hutcheson, H., and Stupavsky, M., 1980. Positive test of the paleomagnetic method for estimating burial depth using a dike contact. Canadian Journal of Earth Sciences 17: 690-697.
  • Buchan, K.L., Schwarz, E.J., Symons, D.T.A., and Stupavsky, M., 1980. Remanent magnetization in the contact zone between Columbia Plateau flows and feeder dikes: evidence for a groundwater layer at time of intrusion. Journal of Geophysical Research 85: 1888-1898.
  • Foster, J., and Symons, D.T.A., 1979, Defining a paleomagnetic polarity pattern in the Monteregian intrusives. Canadian Journal of Earth Sciences 16: 1716-1725.
  • Symons, D.T.A., and Stupavsky, M. 1979. Magnetic characteristics of the iron formation near Temagami, Ontario. Ontario Geological Survey, Misc. Paper 87: 133-147.
  • Symons, D.T.A., 1979. Paleomagnetic stratigraphy of the Meadowcliffe Till, Scarborough Bluffs, Ontario: A Late Pleistocene excursion. Geophysical Research Letters 6: 209-212.
  • Stupavsky, M., Gravenor, C.P., and Symons, D.T.A., 1978. Paleomagnetism of the Seminary and Meadowcliffe Tills from the Scarborough Bluffs, Toronto, Ontario. Report to the Department of Energy, Mines and Resources, Ottawa, 34 pp.
  • Symons, D.T.A., 1978. Paleomagnetism of the 1180 M.Y. Umfraville gabbro. Canadian Journal of Earth Sciences 15: 956-962.
  • Symons, D.T.A., and O'Leary R.J., 1978. Huronian polar wander and paleomagnetism of the Thessalon volcanics. Canadian Journal of Earth Sciences 15: 1141-1150.
  • Stupavsky, M., and Symons D.T.A., 1978. Separation of magnetic components from AF step demagnetization data by least squares computer methods. Journal of Geophysical Research 83: 4925-4931.
  • Symons, D.T.A., 1977. Geotectonics of Cretaceous and Eocene plutons in British Columbia: A paleomagnetic fold test. Canadian Journal of Earth Sciences 14: 1246-1262.
  • Symons, D.T.A., 1977. Paleomagnetism of Mesozoic plutons in the westernmost Coast Complex of British Columbia. Canadian Journal of Earth Sciences 14: 2127-2139.
  • Symons, D.T.A., 1975. Age and flow direction from magnetic measurements on the historic Aiyansh flow, British Columbia. Journal of Geophysical Research 80: 2622-2626.
  • Symons D.T.A. 1975. Huronian glaciation and polar wander from the Gowganda Formation, Ontario. Geology 3: 303-306.
  • Symons, D.T.A. and Londry J., 1975. Tectonic results from paleomagnetism of the Aphebian Nipissing diabase at Gowganda, Ontario. Canadian Journal of Earth Sciences 12: 940-948.
  • Symons, D.T.A., 1974. Paleomagnetic results from the Jurassic Topley Intrusions near Endako, B.C.: Reply. Canadian Journal of Earth Sciences 11: 350-352.
  • Symons, D.T.A., and Stupavsky, M. 1974. A rational paleomagnetic stability index. Journal of Geophysical Research 79: 1718-1720.
  • Stupavsky, M., Gravenor, C.P., and Symons, D.T.A., 1974. Paleomagnetism and magnetic fabric of the Leaside and Sunnybrook tills near Toronto, Ontario. Geological Society of America Bulletin 85: 1233-1236.
  • Symons, D.T.A., 1974. Paleomagnetism of the Jurassic Tulameen Ultramafic Gabbro Complex. Geological Survey of Canada, Paper 74-1, Pt. B, p. 177-183.
  • Symons, D.T.A., 1974. Age and tectonic implications of paleomagnetic results from plutons near Prince Rupert, B.C. Journal of Geophysical Research 79: 2690-2697.
  • Souther, J.G., and Symons, D.T.A., 1974. Stratigraphy and paleomagnetism of Mount Edziza volcanic complex, northwestern British Columbia. Geological Survey of Canada, Paper 73-32, 48 pp.
  • Symons, D.T.A., and Garber, J., 1974. Pole position for the Neohelikian Nemegosenda Carbonatite Complex, Ontario. Canadian Journal of Earth Sciences 11: 341-344.
  • Stupavsky, M., Symons, D.T.A., and Gravenor, C.P., 1974. Paleomagnetism of the Port Stanley Till, Ontario. Geological Society of America Bulletin 85: 141-144.
  • Symons, D.T.A., 1973. Book Review of: Plate Tectonics and Geomagnetic Reversals by A. Cox in: Geolog, 2, pt. 5, p. 45-46.
  • Gravenor, C.P., Stupavsky, M., and Symons, D.T.A., 1973. Paleomagnetism and its relation to till deposition. Canadian Journal of Earth Sciences 10: 1068-1078.
  • Symons, D.T.A., 1973. Unit correlations and tectonic rotation from paleomagnetism of the Triassic Copper Mountain intrusions, B.C. Geological Survey of Canada, Paper 73-19, p. 11-28.
  • Symons, D.T.A., 1973. Paleomagnetic results from the Jurassic Topley Intrusions near Endako, British Columbia. Canadian Journal of Earth Sciences 10: 1099-1108.
  • Symons, D.T.A., 1973. Paleomagnetic results from the Tertiary Mt. Barr and Hope plutonic complexes, British Columbia. Geological Survey of Canada, Paper 73-19, p. 1-10.
  • Symons, D.T.A., 1973. Paleomagnetic zones in the Oligocene East Sooke gabbro, Vancouver Island, British Columbia. Journal of Geophysical Research 78: 5100-5109.
  • Symons, D.T.A., 1973. Concordant Cretaceous paleolatitudes from Coast Range felsic plutons in the Canadian Cordillera. Nature Physical Sciences 241: 59-61.
  • Symons, D.T.A., 1972. Paleomagnetism of the Triassic Guichon Batholith and rotation in the Interior Plateau, British Columbia: Reply. Canadian Journal of Earth Sciences 9: 1343-1347.
  • Winer, A.A., and Symons, D.T.A., 1971. Low-field magnetic susceptibility of asbestos. Second Asbestos Conferences, Brussels, Belgium, p. 1-18.
  • Symons, D.T.A., 1971. Paleomagnetic notes on the Karmutsen basalts, Vancouver Island, British Columbia. Geological Survey of Canada, Paper 71-24, p. 9-24.
  • Symons, D.T.A., 1971. Paleomagnetic notes on some minor Tertiary igneous bodies, Vancouver Island, British Columbia. Geological Survey of Canada, Paper 71-24, p. 1-8.
  • Symons, D.T.A., 1971. Paleomagnetism of the Triassic Guichon Batholith and rotation of the Interior Plateau, British Columbia. Canadian Journal of Earth Sciences 8: 1388-1396.
  • Symons, D.T.A., 1971. A paleomagnetic study of the Nipissing diabase, Blind River Elliot Lake area, Ontario. Geological Survey of Canada, Paper 70-63, p. 19-30.
  • Symons, D.T.A., 1971. Paleomagnetism of the Jurassic Island Intrusions of Vancouver Island, British Columbia. Geological Survey of Canada, Paper 70-63, p. 1-17.
  • Symons, D.T.A., 1970. Interpretation of K Ar age dates GSC 67-27 to 67-32. In: R.K.Wanless et. al. (Eds.). Age Determinations and Geological Studies, Geological Survey of Canada, Paper 69-2A, p. 19-20.
  • Winer, A.A., Karpoff, D., and Symons, D.T.A., 1970. Low-field magnetic susceptibility of asbestos. Canadian Department of Energy Mines and Resources. Report 232, 17 pp.
  • Schwarz, E.J., and Symons, D.T.A., 1970. Paleomagnetic field intensity during cooling of the Sudbury Irruptive 1700 million years ago. Journal of Geophysical Research 75: 6631-6640.
  • Symons, D.T.A., and Schwarz, E.J., 1970. Paleointensity study of late Miocene igneous rocks from British Columbia, Canada. Canadian Journal of Earth Sciences 7: 176-181.
  • Symons, D.T.A., 1970. Paleomagentism of the Nipissing diabase, Cobalt area, Ontario. Canadian Journal of Earth Sciences 7: 86-90.
  • Symons, D.T.A., 1969. Paleomagnetism of four late Miocene gabbroic plugs in south-central British Columbia. Canadian Journal of Earth Sciences 6: 653-662.
  • Symons, D.T.A., 1969. Paleomagnetism of the late Miocene Plateau basalts in the Cariboo Region of British Columbia. Geological Survey of Canada, Paper 69-43, 16 pp.
  • Christie, K.W., and Symons, D.T.A., 1969. Apparatus for measuring magnetic susceptibility and its anisotropy. Geological Survey of Canada, Paper 69-41, 10 pp.
  • Schwarz, E.J., and Symons, D.T.A., 1969. Geomagnetic intensity between 100 million and 2500 million years ago. Physics of the Earth and Planetary Interiors 2: 11-18.
  • Symons, D.T.A., 1969. Geological implications of paleomagnetic studies in the Bella Coola and Laredo Sound map areas, British Columbia, (93D and 103A). Geological Survey of Canada Paper 68-72, 15 pp.
  • Schwarz, E.J., and Symons, D.T.A., 1968. On the intensity of the paleomagnetic field between 100 million and 2500 million years ago. Physics of the Earth and Planetary Interiors 1: 122-128.
  • Symons, D.T.A., 1967. Paleomagnetism of Lower Paleozoic sediments in southern Ontario. Geological Survey of Canada, Paper 67 1, pt. B, p. 9.
  • Symons, D.T.A., 1967. Paleomagnetism of Precambrian rocks near Cobalt, Ontario. Canadian Journal of Earth Sciences 4: 1161-1169.
  • Symons, D.T.A., 1967. The magnetic and petrologic properties of a basalt column. Geophysical Journal of the Royal Astronomical Society. Ser. A 12: 473-490.
  • Tarling, D.H., and Symons, D.T.A., 1967. A stability index of remanence in paleomagnetism. Geophysical Journal of the Royal Astronomical Society, Ser. A 12: 443-448.
  • Symons, D.T.A., 1967. Paleomagnetic evidence on the genesis of the hard hematite ore deposits of the Vermilion Range, Minnesota. Canadian Journal of Earth Sciences 4: 449-460.
  • Symons, D.T.A., 1967. A paleomagnetic study of concentrating iron ores from Northern Michigan. Economic Geology 62: 118-137.
  • Symons, D.T.A., 1967. Paleomagnetic evidence on the origin of the Marquette and Steep Rock hard hematite and goethite deposits. Canadian Journal of Earth Sciences 4: 1-20.
  • Symons, D.T.A., 1966. A paleomagnetic study on the Gunflint, Mesabi and Cuyuna iron ranges in the Lake Superior region. Economic Geology 61: 1336-1361.
  • Symons, D.T.A., 1965. Paleomagnetic studies of Lake Superior iron ore deposits. Ph.D. Thesis, University of Toronto, 185 pp (W.H. Gross, Supervisor)
  • Symons, D.T.A., 1962. Mercury. In: Equilibrium Diagrams of Minerals at Low Temperature and Pressure, H.H. Schmitt, edit., Harvard Geological Club, Cambridge, Mass., p. 164-175. (R.M. Garrels, Supervisor)
  • Symons, D.T.A., 1960. Stratigraphy and correlation of the Bullhead group of northeastern British Columbia. B.A.Sc. Thesis, University of Toronto, 89 pp. (F.W. Beales, Supervisor)